CN111846577B

CN111846577B - Thermal shrinkage film packaging method

Info

Publication number: CN111846577B
Application number: CN202010608392.5A
Authority: CN
Inventors: 陈仕强; 许莲
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2022-04-22
Anticipated expiration: 2040-06-29
Also published as: CN111846577A

Abstract

The invention discloses a thermal shrinkage film packaging method, which comprises the following steps: preparing a heat-shrinkable film; forming a gas hole line including a plurality of gas discharge holes on the heat-shrinkable film; packaging the heat-shrinkable film on the box body; carrying out thermal shrinkage treatment on the packaged thermal shrinkage film; and attaching the easy-to-tear label to the position near the vent hole. According to one embodiment of the disclosure, by taking the air hole line formed by the air vent hole as the position for tearing the heat-shrinkable film, the heat-shrinkable film can be easily torn from the air hole line position by pulling the easy-tearing label near the air vent hole. The process of forming the cut by hot cutting is not needed, the process steps are simplified, and the cost of using a hot cutting machine is saved.

Description

Thermal shrinkage film packaging method

Technical Field

The invention relates to the technical field of packaging, in particular to a thermal shrinkage film packaging method.

Background

With the continuous development of economy, the quality requirements of consumer products are continuously improved while people consume the products. The plastic envelope can be carried out outside the packing carton after the product packing of selling to avoid causing wearing and tearing to the packing carton of product, can also prevent simultaneously that the packing carton from weing, falling grey.

In the prior art, the packaging box is externally packaged through a heat-shrinkable film. After the thermal shrinkage film is subjected to thermal shrinkage, the thermal shrinkage film is tightly attached to the packaging box, a consumer can take out the packaging box only by scratching the thermal shrinkage film with the help of a tool, and the film tearing is very inconvenient.

At present, the method for solving the problem that the thermal shrinkage film is not changed is to form an easy-to-tear notch on the thermal shrinkage film after thermal shrinkage and match a hand-tearing label to tear the thermal shrinkage film. However, this method requires the procurement of a hot-cutting machine, which increases the cost. And when the easy-to-tear cut is formed by hot cutting, the mark is easily left on the packaging box, and the packaging box is damaged.

Therefore, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a new technical scheme of a heat-shrinkable film packaging method.

According to an aspect of the present invention, there is provided a heat shrink film packaging method, wherein the method includes:

preparing a heat-shrinkable film;

forming a gas hole line including a plurality of gas discharge holes on the heat-shrinkable film;

packaging the heat-shrinkable film on the box body;

carrying out thermal shrinkage treatment on the packaged thermal shrinkage film;

and attaching the easy-to-tear label to the position near the vent hole.

Optionally, the gas pocket line includes first gas pocket line, second gas pocket line and third gas pocket line, first gas pocket line with the second gas pocket line is parallel, the third gas pocket line is located first gas pocket line with between the second gas pocket line, the third gas pocket line respectively with first gas pocket line and the second gas pocket line is connected.

Optionally, the peel tab is affixed to one side of the third air hole line and between the first air hole line and the second air hole line.

Optionally, a first end of the third gas hole line is connected to a first end of the first gas hole line, a second end of the third gas hole line is connected to a first end of the second gas hole line, and the first end of the first gas hole line and the first end of the second gas hole line are both located in the same extending direction.

Optionally, the heat-shrinkable film after heat-shrinking treatment comprises a plurality of surfaces, at least one surface is a tearing surface, and the air hole line is arranged on the tearing surface.

Optionally, after the heat-shrinkable film after packaging is subjected to heat-shrinkable treatment, the tearing surface is provided with a first strain area, a second strain area and a third strain area between the first strain area and the second strain area, the first air hole line is located in the first strain area, the second air hole line is located in the second strain area, and the thickness of the first strain area and the thickness of the second strain area are both smaller than the thickness of the third strain area.

Optionally, the first strain zone and the second strain zone are respectively located at two opposite edges of the tear face.

Optionally, the thickness of the first strained region and the thickness of the second strained region are less than 80% of the thickness of the third strained region.

Optionally, a plurality of said exhaust holes are arranged equidistantly.

Optionally, the distance between two adjacent exhaust holes is smaller than or equal to the diameter of the exhaust hole.

In one embodiment of the disclosure, the air hole line formed by the air vent hole is used as the position for tearing the heat-shrinkable film, and the heat-shrinkable film can be easily torn from the air hole line position by pulling the easy-tearing label near the air vent hole. The process of forming the cut by hot cutting is not needed, the process steps are simplified, and the cost of using a hot cutting machine is saved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic illustration of the distribution of porosity lines on a tear face of one embodiment of the present disclosure.

Fig. 2 is a schematic structural view of a peel-off label attached to a first surface according to an embodiment of the present disclosure.

FIG. 3 is a schematic illustration of the distribution of gas porosity lines in a strain zone according to an embodiment of the present disclosure.

Fig. 4 is a diagram of a state in which a heat shrink film is torn by a tear tab according to an embodiment of the present disclosure.

Reference numerals:

1: tear face, 11: first vent line, 12: second gas hole line, 13: third gas hole line, 21: first strain region, 22: second strained region, 23: third strain region, 3: label body, 31: and an adhesive part.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

preparing a heat-shrinkable film;

packaging the heat-shrinkable film on the box body;

and attaching the easy-to-tear label to the position near the vent hole.

In this embodiment, a plurality of air vent holes are formed on the heat shrinkable film for sealing the case. In the process of carrying out heat shrinkage on the heat-shrinkable film, redundant air in the heat-shrinkable film can be discharged from the air vent. The thermal shrinkage film is attached to the surface of the box body after thermal shrinkage is finished, and the thermal shrinkage film is easier to tear at the position of a gas hole line formed on the thermal shrinkage film by the exhaust hole. And an easily torn label is stuck near the air hole line and can assist in tearing the thermal shrinkage film.

The thermal shrinkage film is torn at the formed exhaust hole, so that the thermal shrinkage film does not need to be processed after thermal shrinkage to form a notch, and the process steps are reduced. And a cut is not required to be formed by using a hot cutting machine, so that the cost of the production process is saved, and the box body is prevented from being damaged in the hot cutting process.

The size of the vent holes is set by the ratio of the shrinkage after heat shrinkage by a heat shrinkage film, which is known to those skilled in the art. The exhaust hole on the heat-shrinkable film can be formed by a tool in front of the packaging box body, or can be formed on the heat-shrinkable film by a mould during film forming of the heat-shrinkable film.

The easy-to-tear label is adhered near the air hole line, and specifically, the easy-to-tear label includes a label body 3 and an adhesive portion 31 provided on the label body 3. The adhesive portion 31 is adhered to a portion of the heat shrinkable film near the air hole line, and the adhesive portion 31 is not in contact with the air hole line. In the process of tearing the heat-shrinkable film, the label body 3 is grabbed and torn.

In one embodiment, as shown in fig. 1, the gas hole lines include a first gas hole line 11, a second gas hole line 12, and a third gas hole line 13, the first gas hole line 11 is parallel to the second gas hole line 12, the third gas hole line 13 is located between the first gas hole line 11 and the second gas hole line 12, and the third gas hole line 13 is connected to the first gas hole line 11 and the second gas hole line 12, respectively.

In the process of tearing the heat-shrinkable film by the easy-tear label, the heat-shrinkable film may be torn from the positions of the first, second, and third air hole lines 11, 12, and 13, thereby forming an opening in the heat-shrinkable film, which is partially bordered by the first, second, and third air hole lines 11, 12, and 13. The size of the opening is determined by the specific dimensions of the first, second and third

gas hole lines

11, 12, 13, and the larger the size of the gas hole line, the larger the opening to be torn.

The incision that the hot cutting formed among the prior art is basically a straight line incision, and the degree of tearing is less among the tearing process, need tear the pyrocondensation membrane once more under most circumstances and just can form the opening that conveniently demolishs the pyrocondensation membrane. Compared with the prior art, the opening formed in the embodiment has larger area and can be easily torn, and the opening which is convenient for removing the heat shrinkable film is not required to be torn again.

For example, both of the films may have a predetermined length, the same length, or different lengths. After the first air hole line 11 and the second air hole line 12 are disposed on the heat shrinkable film, they may be partially opposed to each other or may be completely opposed to each other. For example, a line connecting ends of the first and second

gas hole lines

11 and 12 in the same direction is perpendicular to both the first and second

gas hole lines

11 and 12. The opening can be neatly and beautifully formed when the thermal shrinkage film is torn along the air hole line.

In one embodiment, as shown in fig. 2, the tear tab is attached to one side of the third air hole line 13 and between the first air hole line 11 and the second air hole line 12. Specifically, the adhesive portion 31 of the easy-tear label is attached to the third air hole line 13, and the label body 3 and the heat shrinkable film are not adhered to each other.

In this embodiment, the heat shrink film is torn by grasping the label body 3. The bonding portion 31 is bonded to a region surrounded by the first, second, and third

gas hole lines

11, 12, and 13. The label body 3 is pulled to tear the heat-shrinkable film from the position of the third air hole line 13, and the third air hole line 13 is connected with the first air hole line 11 and the second air hole line 12, so that the third air hole line 13 can be continuously torn along the first air hole line 11 and the second air hole line 12 after being torn. The area of the opening for tearing is increased.

The third air hole line 13 may be connected to the first air hole line 11 and the second air hole line 12, and the air holes may be arranged in a curved line. This makes it easier to extend the tear from the third gas hole line 13 to the first gas hole line 11 and the second gas hole line 12 during the process of tearing the gas hole lines, and improves the reliability with which normal tearing from the gas hole lines is possible.

In one embodiment, a first end of the third air hole line 13 is connected to a first end of the first air hole line 11, a second end of the third air hole line 13 is connected to a first end of the second air hole line 12, and the first end of the first air hole line 11 and the first end of the second air hole line 12 are located in the same extending direction.

In this embodiment, in the process of tearing the heat shrinkable film, it is first torn from the position of the third gas hole line 13. After the third gas hole line 13 is completely torn, the tearing is continued along the first end of the first gas hole line 11 and the first end of the second gas hole line 12. Since both ends of the third gas hole line 13 are connected to the ends of the same extension lines of the first and second

gas hole lines

11 and 12, respectively, the first and second

gas hole lines

11 and 12 are torn in the same direction. Further, the first and

second vent lines

11 and 12 can be more easily torn off, and the heat-shrinkable film can be torn off to a larger opening, so that the opening from which the heat-shrinkable film is removed can be more easily formed.

In one embodiment, the heat-shrinkable film after heat-shrinking treatment comprises a plurality of surfaces, at least one surface is a tearing surface 1, and the air hole line is arranged on the tearing surface 1.

The box body can be hugged closely to the pyrocondensation membrane after the pyrocondensation, forms the surface of a plurality of pyrocondensation membranes along the side of box body, and at least one surface forms tearing face 1, and the gas pocket line is located this tearing face 1, tears the pyrocondensation membrane and forms the opening at this tearing face 1 and is used for further tearing and take off the pyrocondensation membrane.

In the case where the tear face 1 is formed on a plurality of surfaces, the plurality of surfaces of the heat-shrinkable film each have the vent hole, and the venting efficiency can be increased. In addition, the plurality of tearing surfaces 1 are provided with air hole lines, so that the heat-shrinkable film can be easily torn from the box body.

In one embodiment, as shown in fig. 3, after the heat-shrinking treatment of the packaged heat-shrinkable film, the tear surface 1 has a first strain region 21 and a second strain region 22 and a third strain region 23 between the first strain region 21 and the second strain region 22, the first air hole line 11 is located in the first strain region 21, the second air hole line 12 is located in the second strain region 22, and the thickness of the first strain region 21 and the thickness of the second strain region 22 are both smaller than the thickness of the third strain region 23.

In this embodiment, the heat shrink film is tightened against the surface of the case after the heat shrinking process, and the first strain area 21 and the second strain area 22 are thinner relative to the third strain area 23. By locating the first vent line 11 in the first strained area 21 and the second vent line 12 in the second strained area 22, it is easier to tear the shrink film along the first vent line 11 and the second vent line 12. For example, after the third gas hole line 13 is torn, the first gas hole line 11 and the second gas hole line 21 can be torn more easily along the first strain area 21 and the second strain area 22 to form a larger opening for tearing off the heat shrinkable film to take out the box body. The reliability of tearing the opening formed by the heat shrinkable film is improved.

In one embodiment, the first strain zone 21 and the second strain zone 22 are located at two opposite edges of the tear face 1, respectively.

The heat shrinkable film can be tightened on the box body after being thermally shrunk, the first strain area 21 and the second strain area 22 which are positioned at the edge of the tearing face 1 can be bordered with other side faces, and the box body at the bordered position can form an edge angle, so that the thickness of the heat shrinkable film near the position after being shrunk is smaller.

In this embodiment, the heat shrinkable film is thinner near the corners of the case, and the first and second strain zones 21 and 22 are thinner relative to the third strain zone 23, thereby making it easier to tear the first and

second vent lines

11 and 12.

In one embodiment, the thickness of the first strained region 21 and the thickness of the second strained region 22 are less than 80% of the thickness of the third strained region 23.

At this thickness, the first gas hole lines 11 located at the first strain areas 21 and the second gas hole lines 12 located at the second strain areas 22 are more easily torn. And the structural strength of a layer of film layer formed outside the box body by the thermal shrinkage film can be met, the film layer cannot be easily damaged, and the box body is protected from being damaged. In addition, the position of the air hole line can be more easily torn.

In one embodiment, a plurality of the exhaust holes are arranged equidistantly. The equidistant arrangement of a plurality of exhaust holes makes the interval between the exhaust hole even, can evenly tear at the in-process that the pulling was easily torn the label, can not appear the fracture of gas hole line part and lead to the condition of the opening undersize of tearing. The reliability of tearing the thermal shrinkage film is improved.

In one embodiment, the distance between two adjacent vent holes is smaller than or equal to the diameter of the vent hole. And in the process of tearing the air hole lines on the heat-shrinkable film, the heat-shrinkable film structure between the air holes is torn and disconnected by tearing strength, so that the air hole lines are torn. The distance between two adjacent exhaust holes is set to be not larger than the diameter of the exhaust hole, the size of the heat-shrinkable film structure of the adjacent exhaust hole piece can be reduced, the force required for tearing from the air hole line position is reduced, and therefore the tearing of the heat-shrinkable film is easier.

As shown in fig. 4, the opening is formed by tearing the heat shrinkable film by pulling the label body 3. The edges of the opening are distributed to the first and second

gas hole lines

11 and 12 along the third gas hole line 13 and extend along the first and second

gas hole lines

11 and 12, enabling a larger opening to be formed.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A heat shrink film encapsulation method, comprising:

preparing a heat-shrinkable film;

packaging the heat-shrinkable film on the box body;

attaching an easy-to-tear label to the vicinity of the vent hole;

the surface of the heat-shrinkable film after heat-shrinkable treatment is provided with a first strain area, a second strain area and a third strain area positioned between the first strain area and the second strain area, and the thickness of the first strain area and the thickness of the second strain area are both smaller than the thickness of the third strain area;

the gas pocket line includes first gas pocket line, second gas pocket line and third gas pocket line, first gas pocket line is located first strain zone, second gas pocket line is located second strain zone, third gas pocket line is located third strain zone.

2. The heat shrink film packaging method of claim 1, wherein the first air hole line is parallel to the second air hole line, the third air hole line is located between the first air hole line and the second air hole line, and the third air hole line is connected with the first air hole line and the second air hole line respectively.

3. The method of heat shrink film encapsulation according to claim 2 wherein said peel label is applied to one side of said third gas hole line and between said first and second gas hole lines.

4. The heat shrink film packaging method of claim 3, wherein a first end of the third gas hole line is connected to a first end of the first gas hole line, a second end of the third gas hole line is connected to a first end of the second gas hole line, and the first end of the first gas hole line and the first end of the second gas hole line are both located in the same extension direction.

5. The heat-shrinkable film packaging method according to claim 2, wherein the heat-shrinkable film after heat-shrinking treatment comprises a plurality of surfaces, at least one of which is a tear surface on which the gas hole line is provided.

6. The heat shrink film wrapping method of claim 5, wherein said first strain zone and said second strain zone are located at opposite edges of said tear face, respectively.

7. The heat shrink film packaging method of claim 6, wherein a thickness of the first strain zone and a thickness of the second strain zone are less than 80% of a thickness of the third strain zone.

8. The heat shrink film encapsulation method of claim 1 wherein a plurality of said vent holes are arranged equidistantly.

9. The heat shrink film packaging method of claim 8, wherein a distance between adjacent two of the vent holes is less than or equal to a diameter of the vent hole.